Earlier quoted context omitted.
From my travels the USA is way more concerned with water-saving devices, even in areas where there really is no water conservatory problems. Toilets in Europe will still seem to flush using the full power of Niagara Falls, which are quite rare in the US now.
Europe doesn't have the water scarcity issues of the US. When my brother in law from Germany visited a few summers ago he was shocked by the amount of drought news and water conservation instructions broadcast daily on TV.
https://joint-research-centre.ec.europa.eu/jrc-news-and-upda...